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Jobvetta vs MailCheck.ai

Same instrument, two spec sheets — measured, not claimed.

APIJobvettaREACHABLE—MailCheck.aiHEALTHY92
Uptime · 30d
Uptime · 90d—%94.4%
Uptime · 30d—%94.4%
P50 · ms—318
P95 · ms—842
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree — limits not published
Rate limit5 req/window · 4 remaining
In directory since2026-07-252026-07-05
operationalpartialdownno data

Jobvetta vs MailCheck.ai: common questions

Which is more reliable, Jobvetta or MailCheck.ai?

On our scheduled checks, MailCheck.ai leads on measured uptime — Jobvetta at —% versus MailCheck.ai at 94.4% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Jobvetta and MailCheck.ai need an API key?

MailCheck.ai needs no key, while Jobvetta requires a free API key. If you want to start calling without signup, reach for MailCheck.ai first.

Can I call Jobvetta and MailCheck.ai from the browser?

Yes — both Jobvetta and MailCheck.ai send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Jobvetta and MailCheck.ai free for commercial use?

Jobvetta has unclear commercial terms, and MailCheck.ai has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.